chgr {FAOSTAT}

Absolute change between the year

Description

Function for generating the n-period absolute change

Usage

chgr(x, n = 1)

Arguments

x

The time series for the change to be calculated.

n

The period for the growth to be calculated over.

Details

In order to ensure the change calculated is reliable, the following rule are applied.

1. 50% of the data must be present.

2. The length of the time series must be greater than n

Otherwise the growth will not be computed.

Value

The n-period change of the time series.

Examples

test.ts = abs(rnorm(100))
chgr(test.ts, 1)
chgr(test.ts, 3)
chgr(test.ts, 10)